[1.0.X] Fixed `check_geom` and `check_srs` to accept larger sized pointer...

[1.0.X] Fixed `check_geom` and `check_srs` to accept larger sized pointer addresses as returned by some platforms (including OpenBSD 4.4 and Fedora 8).

Backport of r9693 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9694 bcc190cf-cafb-0310-a4f2-bffc1f526a37